US4812633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical data card
Assignee: 3M Co
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Filing: 1988-04-08
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Granted: 1989-03-14
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Expires: 2008-04-08
Abstract
Abstract A wallet-sized data card includes a magneto-optic active region configured for rotational recording of data. A fender projecting outwardly from the card is disposed adjacent an outer circumference of the recording region for protecting the magneto-optic recording region.
Inventors
- 👤 Peter J. Vogelgesang
- 👤 John W. Ulseth
- 👤 Norman L. Giorgini
- 👤 Jathan D. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:46
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/04; G06K19/041; G06K19/042; G06K19/044; G06K19/06; G06K19/06009; G06K19/06018; G06K19/06046; G11; G11B; G11B11/00; G11B11/10; G11B11/105; G11B11/10582; G11B11/10584; G11B7/00; G11B7/002; G11B7/0033; G11B7/24; G11B7/24003; G11B7/24012
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
36 words
A data card comprising: a substrate having a magneto-optic active region configured for rotational recording of data; and first fender means for protecting the magneto-optic recording region disposed adjacent an outer circumference of the recording region.
Claim 2
Dependent Claim
36 words
A data card comprising: a substrate having a magneto-optic active region configured for rotational recording of data; and first fender means for protecting the magneto-optic recording region disposed adjacent an outer circumference of the recording region.
Claim 3
Dependent Claim
26 words
The card of claim 1 and further including second fender means for protecting the magneto-optic active region disposed along an inner circumference of the recording region.
Claim 4
Dependent Claim
19 words
The card of claim 1 wherein the first fender means is a continuous ridge extending outwardly from the substrate.
Claim 5
Dependent Claim
19 words
The card of claim 2 wherein the second fender means is a continuous ridge extending outwardly from the substrate.
Claim 6
Dependent Claim
31 words
The card of claim 1 further comprising, as a centering means, a depression disposed on a center point of the magneto-optic active region for centering the magneto-optic active region during rotation.
Claim 7
Dependent Claim
20 words
The card of claim 1 wherein the first fender means extends outwardly from the substrate at least approximately 0.025 CM.
Claim 8
Dependent Claim
45 words
The card of claim 1 wherein the substrate includes a backing layer, a transparent top layer and a magneto-optic medium layer disposed between the backing, the top layer and at least a portion of the magneto medium layer being disposed within the magneto-optic active region.
Claim 9
Independent Claim
85 words
A method of making a data card comprising: providing a rectangular substrate and an optical disk having a magneto-optic medium for recording of data in a magneto-optic active area, the disk being smaller in diameter than the width and length of the substrate; forming an area of the substrate sufficient in diameter to accept the disk and sufficient in depth such that a top surface of the disk is substantially even with a top surface of the substrate; and joining the disk to the substrate.
Claim 10
Independent Claim
85 words
A method of making a data card comprising: providing a rectangular substrate and an optical disk having a magneto-optic medium for recording of data in a magneto-optic active area, the disk being smaller in diameter than the width and length of the substrate; forming an area of the substrate sufficient in diameter to accept the disk and sufficient in depth such that a top surface of the disk is substantially even with a top surface of the substrate; and joining the disk to the substrate.
Claim 11
Dependent Claim
38 words
The method of claim 8 and further including: providing a first protruberance in the substrate adjacent the disk, the first protruberance means extending outwardly from the substrate a sufficient distance to provide protection to the magneto-optic active area.
Claim 12
Dependent Claim
13 words
The method of claim 9 wherein the first protruberance is a continuous ridge.
Claim 13
Independent Claim
66 words
A method of making a data card comprising: providing a substrate having an aperture therein; providing an optical disk having a magneto-optic medium for recording of data in a magneto-optic active area, the disk having a diameter equal to or smaller in diameter than the aperture of the substrate: positioning the disk within the aperture; and fixedly attaching the disk to the substrate within the aperture.
Claim 14
Independent Claim
66 words
A method of making a data card comprising: providing a substrate having an aperture therein; providing an optical disk having a magneto-optic medium for recording of data in a magneto-optic active area, the disk having a diameter equal to or smaller in diameter than the aperture of the substrate: positioning the disk within the aperture; and fixedly attaching the disk to the substrate within the aperture.
Claim 15
Dependent Claim
21 words
The method of claim 11 and further including providing a protruberance means in the substrate adjacent the circumference of the aperture.
Claim 16
Dependent Claim
16 words
The method of claim 12 wherein the protruberance means includes a continuous ridge adjacent the aperture.
References Cited (Backward Citations)
US4772872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |